Method and apparatus for phase-shift null-burst-pattern

Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format

Reexamination Certificate

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C360S040000

Reexamination Certificate

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07457066

ABSTRACT:
A media includes a plurality of tracks, a preamble portion including a set of signals, a first servo burst having a first plurality of signals written substantially in phase with the preamble portion, and a second servo burst written out of phase with the preamble and the first servo portion. The media may be housed within a disk drive that includes a transuding head to read information from the media, and a read channel to read information from the disk including the information associated with the first servo burst and the second servo burst.

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